Section 31
Chapter 30,650

Comparison of the use of antibodies to alpha smooth muscle actin and desmin in pulmonary lymphangioleiomyomatosis

Matthews, T.J.; Hornall, D.; Sheppard, M.N.

Journal of Clinical Pathology 46(5): 479-480


ISSN/ISBN: 0021-9746
PMID: 8320334
DOI: 10.1136/jcp.46.5.479
Accession: 030649549

To establish if antibodies to alpha smooth muscle actin (ASMA) are better than desmin as a tumour marker in pulmonary lymphangioleiomyomatosis both antisera were applied to five cases. ASMA strongly stained the muscle in all cases but desmin was negative. Five cases of cryptogenic fibrosing alveolitis showed that mature smooth muscle embedded in fibrous tissue surrounding cysts was positively stained with ASMA but the interstitial fibrous tissue was negative. ASMA is a consistent and better marker than desmin for the detection of immature smooth muscle in pulmonary lymphangioleiomyomatosis.

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